FOXNews.com: NOT DONE GROWING:Sinkhole That Swallowed Man May Do More Damage

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NOT DONE GROWING:Sinkhole That Swallowed Man May Do More Damage Mar 2nd 2013, 19:05 Engineers working to find out more about a slowly growing sinkhole that swallowed a Florida man in his bedroom believe the entire house could potentially succumb to the unstable ground.  Jeff Bush, 37, was in his bedroom Thursday night when the earth opened and took him and everything else in his room. Five other people were in the house but managed to escape unharmed. Bush's brother, Jeremy, jumped into the hole to try to help, but he had to be rescued himself by a sheriff's deputy. "I jumped in the hole and tried to get him out," said Bush. "I couldn't get him out. All I could hear, I thought I could hear him screaming for him, hollering for me to help, I couldn't do nothing." On Saturday, Hillsborough County Fire Rescue spokesman Ronnie Rivera said one of the homes next door to the Bush house also was compromised by the sinkhole, as determined through testing. The family, which had evacuated Friday, would be allowed to go inside for about a half-hour to gather belongings, Rivera said. The family was outside, crying and organizing boxes. Engineers had been testing since 7 a.m. Saturday. By 10 a.m., officials moved media crews farther away from the Bush house so experts could perform tests on the home across the street. It's unclear how large the sinkhole is or whether it leads to other caverns and chasms throughout the neighborhood. Experts say the underground of West Central Florida looks similar to Swiss cheese, with the geography lending itself to sinkholes. There was some talk initially that they might try to bring in some bright lights and work through the night, but it's just not safe. Engineers say it's a complex collapse that is continuing to evolve and sink. Now it's a question of when or if they can ever get in there. "I just want my brother out," said Jeremy Bush. "I don't care what they do." Experts spent the previous day on the property, taking soil samples and running various tests -- while acknowledging that the entire lot where Bush lay entombed was dangerous. No one was allowed in the home. "I cannot tell you why it has not collapsed yet," Bill Bracken, the owner of an engineering company called to assess the sinkhole, said of the home. He described the earth below as a "very large, very fluid mass." Even the slighest vibration, he said, could trigger a massive collapse, making it impossible for now to recover Bush's body. "This is actually unprecedented," said engineer Larry Madrid, who estimated the hole to be 20 to 30 feet in diameter. Madrid said, it started at 15 feet, then sunk to 25 feet. "We've determined that there was an initial collapse, followed very shortly by another collapse and we have noticed movement in the ground since then," Madrid said. The hole is deepening and as the steep walls of unstable, soft and sandy soil continue to collapse, the entire house may be swallowed up. "Given the size of the hole, I cannot tell you why it has not collapsed yet," said Bracken. Rescue crews have been using equipment sensitive enough to hear a mouse walk across the floor, but have heard nothing. "My heart goes out to the family," said Hillsborough County Administrator Mike Merrill, who added they are doing everything they possibly can, but this is not your typical sinkhole. It's a honeycomb of a chasm. Neighbors close by have been evacuated. "The only thing that would be worse, than what they're feeling now for their loss, would be to experience additional human loss," said Merrill. "He's in the Lord's hands," said Bush's grandfather Buddy Wicker, who owns the home. "He's in God's hands. That's all I can say. He's in God's hands." Florida is highly prone to sinkholes because there are caverns below ground of limestone, a porous rock that easily dissolves in water. A sinkhole near Orlando grew to 400 feet across in 1981 and devoured five sports cars, most of two businesses, a three-bedroom house and the deep end of an Olympic-size swimming pool. More than 500 sinkholes have been reported in Hillsborough County alone since the government started keeping track in 1954, according to the state's environmental agency. Engineers said they may have to demolish the small house, even though from the outside there appeared to be nothing wrong with the four-bedroom, concrete-wall structure, built in 1974. Jeremy Bush said someone came out to the home a couple of months ago to check for sinkholes and other things, apparently for insurance purposes. "He said there was nothing wrong with the house. Nothing. And a couple of months later, my brother dies. In a sinkhole," Bush said. The Associated Press contributed to this report. Click for more from MyFoxTampaBay.com.

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